398290254284 has 48 divisors (see below), whose sum is σ = 763480650240. Its totient is φ = 180678788160.

The previous prime is 398290254281. The next prime is 398290254293. The reversal of 398290254284 is 482452092893.

It is a happy number.

It is a super-2 number, since 2×398290254284² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (398290254281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32793917 + ... + 32806059.

It is an arithmetic number, because the mean of its divisors is an integer number (15905846880).

Almost surely, 2^398290254284 is an apocalyptic number.

It is an amenable number.

398290254284 is a deficient number, since it is larger than the sum of its proper divisors (365190395956).

398290254284 is a wasteful number, since it uses less digits than its factorization.

398290254284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22910 (or 22908 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 398290254284 in words is "three hundred ninety-eight billion, two hundred ninety million, two hundred fifty-four thousand, two hundred eighty-four".